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Assertion failed 'false' during 'Early Value Propagation' #36588

@BruceForstall

Description

@BruceForstall

Failure in libraries System.Data.Common.Tests: release libraries, checked coreclr with:

set COMPlus_TieredCompilation=0
set COMPlus_JitStress=2

Windows x64

E.g.,

build -s libs+libs.tests -runtimeConfiguration checked -c Release -arch x64 /p:ArchiveTests=true

(the /p:ArchiveTests=true is required to build the RunTests.cmd wrapper scripts)

C:\gh\runtime\artifacts\bin\System.Data.Common.Tests\net5.0-Release>call .\RunTests.cmd -r C:\gh\runtime\artifacts\bin\testhost\net5.0-Windows_NT-Release-x64
C:\gh\runtime\artifacts\bin\System.Data.Common.Tests\net5.0-Release>"C:\gh\runtime\artifacts\bin\testhost\net5.0-Windows_NT-Release-x64\dotnet.exe" exec --runtimeconfig System.Data.Common.Tests.runtimeconfig.json --depsfile System.Data.Common.Tests.deps.json xunit.console.dll System.Data.Common.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing
  Discovering: System.Data.Common.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.Data.Common.Tests (found 1789 of 1791 test cases)
  Starting:    System.Data.Common.Tests (parallel test collections = on, max threads = 8)
BBF_HAS_IDX_LEN is not set on BB03 but is required because of the following tree
N002 (  3,  3) [000248] ---X--------              *  ARR_LENGTH int
N001 (  1,  1) [000249] ------------              \--*  LCL_VAR   ref    V08 tmp6         u:2 (last use)

Assert failure(PID 39480 [0x00009a38], Thread: 41660 [0xa2bc]): Assertion failed 'false' in '<>c:<Properties>b__6_2():System.Object:this' during 'Early Value Propagation' (IL size 19)

    File: C:\gh\runtime\src\coreclr\src\jit\earlyprop.cpp Line: 189
    Image: C:\gh\runtime\artifacts\bin\testhost\net5.0-Windows_NT-Release-x64\dotnet.exe

@dotnet/jit-contrib

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area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

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